The actress, who is currently starring as Holly Golightly in ‘Breakfast at Tiffany’s’ in London’s West End, was photographed sharing a lingering kiss with John Cross, 23, at a London bar on Saturday night, days after they enjoyed an evening out with her partner David Thewlis.
An onlooker said: “They have a great chemistry on stage and are obviously close friends off it. But I was still surprised when I saw Anna plant him with a kiss on the lips.”
However, despite their kiss, pals of the 33-year-old British beauty insist there is nothing romantic going on between her and John.
A pal said: “Anna is queen of touchy feely – but they’re just good friends.”
Anna – who has a four-year-old daughter Gracie with David – has previously spoken about how much she likes showing affection to her co-stars, including ‘Lee Pace’, who she starred opposite in US TV drama ‘Pushing Daisies’.
She said: "It's not nice to work with someone as gorgeous as Lee and not to be able to give him a hug. I'm a tactile person and hugs are something I hold dear to my heart."